Heat-radiating device

ABSTRACT

The present invention provides a heat-radiating device comprising a motor, a link mechanism, a first cylinder, a second cylinder, and a heat regenerator. The link mechanism is disposed at the output end of the motor. The heat regenerator is connected at rear ends of the first cylinder and the second cylinder, respectively. A first link is disposed between a first piston in the first cylinder and the link mechanism. One side on the outer wall of the first cylinder is a heated end. A second link is disposed between a second piston in the second cylinder and the link mechanism. A heat-radiating element is disposed on an outer wall of the second cylinder. When the motor rotates, alternating and reciprocating circulation of gas in the first and second cylinders is driven via the link mechanism to conduct an external heat source from the heated end to the heat-radiating element.

FIELD OF THE INVENTION

[0001] The present invention relates to a heat-radiating device and, more particularly, to a heat-radiating device utilizing alternating circulation of gas in cylinders to absorb and radiate out heat of a heat source outside the cylinders.

BACKGROUND OF THE INVENTION

[0002] As shown in FIG. 1, a conventional heat-radiating device of an internal chip of a computer comprises a fan 1 a and a heat-radiating element 2 a. The fan 1 a is disposed on the heat-radiating element 2 a. The heat-radiating element 2 a is disposed on a central processor 4 a of a motherboard 3 a. The heat-radiating element 2 a comprises a plurality of heat-radiating fins made of aluminum or copper. Heat generated when the central processor 4 a works is absorbed on the heat-radiating element 2 a via heat-spreading material of the heat-radiating element 2 a, and is discharged by means of the operation of the fan 1 a, thereby achieving heat-radiating object.

[0003] However, in the above heat-radiating device, heat generated when the central processor 4 a works is only passively spread via the heat-radiating element 2 a. Heat-spreading speed of the heat-radiating element 2 a is mainly determined by heat-radiating coefficient of heat-radiating material itself. In other words, when the generating speed of heat source is larger than the heat-radiating coefficient, the heat-radiating element 2 a cannot immediately and effectively reduce the temperature of the central processor 4 a, hence resulting in continual increase of the temperature of the central processor 4 a and decreasing the lifetime of use itself.

[0004] Accordingly, the above heat-radiating device has inconvenience and drawbacks in practical use. The present invention aims to resolve the problems in the prior art.

SUMMARY OF THE INVENTION

[0005] The primary object of the present invention is to provide a heat-radiating device, which utilizes gas in cylinders to achieve alternating circulation so as to automatically perform radiation of heat for an external heat source.

[0006] Another object of the present invention is to provide a heat-radiating device capable of increasing rotation speed of a motor to enhance heat-radiating efficiency.

[0007] To achieve the above objects, the present invention provides a heat-radiating device, which comprises a motor, a link mechanism, a first cylinder, a second cylinder, and a heat regenerator. The link mechanism is disposed at the output end of the motor. A first link is disposed between a first piston in the first cylinder and the link mechanism. A second link is disposed between a second piston in the second cylinder and the link mechanism. The heat regenerator is connected at rear ends of the first cylinder and the second cylinder, respectively. A heat-radiating element is disposed on the outer wall of the second cylinder.

[0008] The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing, in which:

BRIEF DESCRIPTION OF THE DRAWINGS

[0009]FIG. 1 is a diagram showing that a conventional heat-radiating device is installed on a computer motherboard;

[0010]FIG. 2 is a cross-sectional view of the present invention;

[0011]FIG. 3 is a diagram showing a first action state of the present invention;

[0012]FIG. 4 is a diagram showing a second action state of the present invention;

[0013]FIG. 5 is a diagram showing a third action state of the present invention;

[0014]FIG. 6 is a diagram showing a fourth action state of the present invention; and

[0015]FIG. 7 is a cross-sectional view of the present invention placed on a central processor.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] As shown in FIG. 2, a heat-radiating device of the present invention comprises a motor 1, a link mechanism 2, a first cylinder 3, a second cylinder 4, and a heat regenerator 5.

[0017] The motor 1 and the link mechanism 2 are disposed in a housing 6. The link mechanism 2 is disposed at the output end of the motor 1, and is composed of a first bearing 21, a second bearing 22, and a crank 23. The crank 23 is disposed between the first bearing 21 and the second bearing 22. The first bearing 21 is disposed between the output end of the motor 1 and one side of the crank 23. The second bearing 22 is disposed between the bottom of the housing 6 and the other side of the crank 23.

[0018] A first piston 31 is disposed inside the first cylinder 3. A first link 32 is disposed between the first piston 31 and the link mechanism 2. One side on the outer wall of the first cylinder 3 is a heated end 33 made of heat-absorbing material. The heated end 33 can be an aluminum plate or a copper plate. A second piston 41 is disposed inside the second cylinder 4. A second link 42 is disposed between the second piston 41 and the link mechanism 2. A heat insulator 7 made of adiabatic material is disposed between the first cylinder 3 and the second cylinder 4. The heat insulator 7 can be Styrofoam or mineral wool. A heat-radiating element 43 is disposed at one side of the outer wall of the second cylinder 4. The heat-radiating element 43 is composed of a plurality of heat-radiating fins. The heat regenerator 5 is connected at rear ends of the first cylinder 3 and the second cylinder 4, respectively. The heat regenerator 5 is used for circulative flow of gas between the first cylinder 3 and the second cylinder 4. A metal net 51 or other porous material sheathes the inside of the heat regenerator 5 to store heat for enhancing performance.

[0019] As shown in FIGS. 3 to 6, after the motor 1 is connected to an external power source (not shown), it will continually rotate to drive the first cylinder 3 and the second cylinder 4 to work ceaselessly via the link mechanism 2. At the first stage (as shown in FIG. 3), the heated end 33 at one side of the outer wall of the first cylinder 3 conducts an external heat source (e.g., heat generated when the central processor works) to gas of lower temperature in the first cylinder 3, heating the gas to form hot gas 8. At the second stage (as shown in FIG. 4), the hot gas 8 is pushed out of the rear end of the first cylinder 3 by the first piston 31, and the heat regenerator 5 then transfers the hot gas 8 into the second cylinder 4. At the third stage (as shown in FIG. 5), the hot gas 8 inside the second cylinder 4 quickly spreads heat to ambient air via the heat-radiating element 43 disposed on the outer wall of the second cylinder 4. The hot gas 8 inside the second cylinder 4 is thus gradually cooled to become cold gas 9. At the fourth stage (as shown in FIG. 6), after gas inside the second cylinder 4 is almost cooled to become the cold gas 9, the second piston 41 pushes the cold gas 9 out of the rear end of the second cylinder 4, and the heat regenerator 5 then transfers the cold gas 9 into the first cylinder 3 to return to the original first stage. A continual and alternating circulation is thus formed.

[0020] Inasmuch as the motor 1 continually rotates and the rotation speed is high enough, the first cylinder 3 and the second cylinder 4 can be continually driven to work via the link mechanism 2. Therefore, external heat source of the first cylinder 3 can be quickly absorbed via the heated end 33 and finally conducted to the heat-radiating element 43 of the second cylinder 4 with gas inside the first cylinder 3, the heat regenerator 5, and the second cylinder 4 used in turn as heat-conducting medium, thereby radiating out the heat source.

[0021] The present invention mainly utilizes the first piston 31 and the second piston 41 for alternating and reciprocating operation to drive circulative flow of gas inside the first cylinder 3, the heat regenerator 5, and the second cylinder 4, letting the first cylinder 3 form a cold end to quickly introduce heat source from the heated end 33 and the second cylinder 4 form a hot end to quickly discharge heat via the heat-radiating element 43. The present invention can effectively improve the drawback of bad heat-radiating effect of a conventional heat-radiating device. Additionally, the rotation speed of the motor 1 can be increased to enhance the whole heat-radiating efficiency.

[0022] Nowadays, the operational speed of a central processor 10 of a computer system becomes higher and higher. If heat generated under so high operational speed is not immediately discharged, the computer system may operate unstably or even malfunction. As shown in FIG. 7, the heated end 33 is placed on the central processor 10. When the motor 1 works, heat generated by the working central processor 10 can be quickly conducted to the heat-radiating element 43 to be radiated out, hence keeping the central processor 10 within normal working temperatures and letting the computer system operate more stably.

[0023] To sum up, the present invention has the following characteristics.

[0024] 1. Alternating circulation of gas inside cylinders is used to quickly discharge heat source outside the cylinders.

[0025] 2. The rotation speed of a motor can be increased to enhance heat-radiating efficiency.

[0026] Although the present invention has been described with reference to the preferred embodiment thereof, it will be understood that the invention is not limited to the details thereof. Various substitutions and modifications have been suggested in the foregoing description, and other will occur to those of ordinary skill in the art. Therefore, all such substitutions and modifications are intended to be embraced within the scope of the invention as defined in the appended claims. 

I claim:
 1. A heat-radiating device, comprising: a motor; a link mechanism disposed at an output end of said motor; a first cylinder with a first piston disposed therein, a first link being disposed between said first piston and said link mechanism; a second cylinder with a second piston disposed therein, a second link being disposed between said second piston and said link mechanism, a heat-radiating element being disposed on an outer wall of said second cylinder; and a heat regenerator respectively connected at rear ends of said first cylinder and said second cylinder to store heat for enhancing performance.
 2. The heat-radiating device as claimed in claim 1, wherein said motor and said link mechanism are disposed inside a housing.
 3. The heat-radiating device as claimed in claim 1, wherein said link mechanism comprises a first bearing, a second bearing, and a crank.
 4. The heat-radiating device as claimed in claim 3, wherein said crank is disposed between said first bearing and said second bearing.
 5. The heat-radiating device as claimed in claim 3, wherein said first bearing is disposed between the output end of said motor and one side of said crank, and said second bearing is disposed between a bottom of a housing and the other side of said crank.
 6. The heat-radiating device as claimed in claim 1, wherein one side of an outer wall of said first cylinder is a heated end made of heat-absorbing material.
 7. The heat-radiating device as claimed in claim 6, wherein said heated end can be an aluminum plate or a copper plate.
 8. The heat-radiating device as claimed in claim 1, wherein a heat isolator made of adiabatic material is disposed between said first cylinder and said second cylinder.
 9. The heat-radiating device as claimed in claim 8, wherein said heat isolator can be Styrofoam or mineral wool.
 10. The heat-radiating device as claimed in claim 1, wherein a heat-radiating element is disposed at one side of the outer wall of said second cylinder.
 11. The heat-radiating device as claimed in claim 10, wherein said heat-radiating element comprises a plurality of heat-radiating fins.
 12. The heat-radiating device as claimed in claim 1, wherein a metal net or other porous material sheathes the inside of said heat regenerator. 